From: Chris Ruehl <chris.ruehl@gtsys.com.hk>
To: unlisted-recipients:; (no To-header on input)
Cc: devicetree@vger.kernel.org,
Chris Ruehl <chris.ruehl@gtsys.com.hk>,
Kishon Vijay Abraham I <kishon@ti.com>,
Vinod Koul <vkoul@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Heiko Stuebner <heiko@sntech.de>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org
Subject: [PATCH 2/2] devicetree: phy: rockchip-emmc add output-tapdelay-select
Date: Wed, 2 Dec 2020 16:25:07 +0800 [thread overview]
Message-ID: <20201202082507.3536-3-chris.ruehl@gtsys.com.hk> (raw)
In-Reply-To: <20201202082507.3536-1-chris.ruehl@gtsys.com.hk>
Update the rockchip-emmc-phy.txt and add the u32 property
'output-tapdelay-select'. This allow to set the otapdlysec register.
Tested with our customized rk3399 board to tune eMMC.
Signed-off-by: Chris Ruehl <chris.ruehl@gtsys.com.hk>
---
Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt b/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt
index 3e4d2d79a65d..00aa2d349e55 100644
--- a/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt
+++ b/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt
@@ -18,6 +18,9 @@ Optional properties:
If not set, the default value of 50 will be applied.
- enable-strobe-pulldown: Enable internal pull-down for the strobe line.
If not set, pull-down is not used.
+ - output-tapdelay-select: Specifies the phyctrl_otapdlysec register.
+ If not set, the register defaults to 0x4.
+ Maximum value 0xf.
Example:
--
2.20.1
next prev parent reply other threads:[~2020-12-02 8:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-02 8:25 [PATCH 0/2] phy: rockchip: set otapdlysec for in dts Chris Ruehl
2020-12-02 8:25 ` [PATCH 1/2] phy: rockchip-emmc: output tap delay dt property Chris Ruehl
2020-12-02 8:25 ` Chris Ruehl [this message]
2020-12-07 17:21 ` [PATCH 2/2] devicetree: phy: rockchip-emmc add output-tapdelay-select Rob Herring
2020-12-05 8:10 ` [PATCH 0/2] phy: rockchip: set otapdlysec for in dts Vinod Koul
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